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How many half-lives would have to elapse for a sample of a radioactive isotope to decrease from an activity of 96 cpm to an activity of 3 cpm?
Wiki User
∙ 13y ago
Verified answer
It takes 5 half lives. The sample has been reduced to 3/96 or 1/32 of its original activity. This is 1/2 to the power of 5.
Wiki User
∙ 13y ago
What is the stable isotope that is formed by the breakdown of a radioactive isotope?
That's called a daughter isotope, or a daughter product. (The original isotope that decayed is the parent isotope.)
What describes a radioisotope?
An isotope of an element that is radioactive
What is tridium?
a radioactive isotope of hydrogen with a mass approximately three times that of the common protium isotope
33P is a radioactive isotope of phosphorus. Can 33P be used to make a radioactive nucleotide?
Yes because it can replace the phosphorus atom in the phosphate group.
What information does the half-life of a radioisotope give?
It tells how long it takes for a radioactive isotope to become a daughter element.
What is the radioactive decay law?
The rate of decay (activity) of a radioactive isotope is proportional to the number of atoms of the isotope present.
What is radioactive decay law?
The rate of decay (activity) of a radioactive isotope is proportional to the number of atoms of the isotope present.
Can the half life of a radioactive isotope decrease as the isotope decays?
No, the half-life of a radioactive isotope does not decrease as the isotope decays. That half-life remains constant. It's the amount of the substance that decreases as the isotope decays.
What is the use of measuring the activity of a radioactive isotope in a sample to determine its age?
radioactive dating
All radioactive nuclides of an element have the same half life?
No, halflife is a bulk statistical property of a quantity of an isotope of an element.Individual nuclei do not have halflives, instead they have a probability of decaying at the current moment of time.
When an isotope is blank it is radioactive?
When an isotope is unstable, it is said to be radioactive.
What does a calibrator do in nuclear medicine?
simply, it measure the activity of a radioactive isotope in Ci "curie" or in Bq "Becquerel"
How is radioactive Isotope different from a stable isotope?
The radioactive isotope is disintegrated in time and emit radiations.
How is a radioactive isotope different from a stable isotope?
The radioactive isotope is disintegrated in time and emit radiations.
Does nuclear radiation go away?
No, it doesn't.Wrong, it does. There are 2 types of nuclear radiation: prompt & decay.Prompt nuclear radiation occurs for a period of time while the reaction that generates it is happening. Examples are the flash of neutrons, light, x-rays, etc. when a nuclear bomb explodes as well as the sustained neutron flux as a nuclear reactor is in operation. When the reaction stops, prompt nuclear radiation goes away.Decay nuclear radiation occurs as radioactive isotopes decay to different isotopes. As the decay happens (which is a probabilistic process) the radioactive isotope is consumed. This follows an exponential function with one half of the current amount of the radioactive isotope consumed in each period of time called a halflife. While there will always be a tiny residue of the original radioactive isotope, for practical purposes it is considered to be negligible after 5 halflives have passed. When 5 halflives of the radioactive isotope decaying have passed, decay nuclear radiation is considered to have gone away for practical purposes.
When an isotope is blank it does not undergo radioactive decay?
when an isotope is it does not undergo radioactive decay
What is half life of a isotope?
The half life of an isotope refers to the rate at which a radioactive isotope undergoes radioactive decay. Specifically, it is the amount of time it takes for half of a given sample of a radioactive isotope to decay.
